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Design method of automobile headlamp reflector

A technology of automobile headlights and design methods, which is applied in the field of headlights and can solve problems such as low light efficiency and complex structure

Active Publication Date: 2015-04-08
GUANGDONG RAYTON INTELLIGENT OPTO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this kind of low-beam headlight can also meet the light emission requirements of the headlight, its structure is relatively complicated, and because the light needs to pass through the lens, its light efficiency is low

Method used

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  • Design method of automobile headlamp reflector
  • Design method of automobile headlamp reflector
  • Design method of automobile headlamp reflector

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with the accompanying drawings of the description.

[0041] Such as figure 1 Shown, a kind of automobile headlight reflector design method, comprises the following steps:

[0042] (1) The car light is a complete lighting system. In order to meet a certain illuminance value, the traditional vehicle uses a parabola as a reflector, and the filament is located near the focus of the parabola. The design of the free-form surface lamp basically adopts this principle; Such as image 3 As shown, the basic reflective surface is established in the X, Y, Z three-dimensional coordinate system. The basic reflective surface is a paraboloid, and the focus of the paraboloid is f. According to the principle of the paraboloid, since the light emitted from the focus is emitted in parallel through the paraboloid, The position of the light source is set at coordinates (0, 0, 15mm);

[0043](2) According to the light dist...

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Abstract

The invention relates to a design method of an automobile headlamp reflector. The design method comprises the following steps of (1) establishing a basic paraboloid in an X-axis, Y-axis and Z-axis three-dimensional coordinate system, and arranging a light source in a coordinate (0, 0, 15mm); (2) dividing the reflector into a plurality of rectangles within a plane vertical to the optical axis; (3) arranging six reflective surfaces in each 1 / 4 reflector, and separating the reflective surfaces by longitudes and latitudes, wherein the reflector consists of an upper 1 / 2 reflector and a lower 1 / 2 reflector in a symmetrical way, and each 1 / 2 reflector consists of a left 1 / 4 reflector and a right 1 / 4reflector in a symmetrical way; (4) inputting the parameters of a basic surface, the parameters of each reflective surface and the parameters of the light source into computer software, and obtaining a luminance distribution gradient map of each reflective surface and a total luminance distribution gradient map on a light distribution screen 25m away from a computer through the tracking of light rays; sequentially modifying the parameters of the near-light reflecting surface and the parameters of the far-light reflecting surface, and repeatedly tracking the light rays, until the near-light and far-light total luminance distribution meets the requirement.

Description

technical field [0001] The invention relates to a headlamp, in particular to a design method for a reflector of an automobile headlamp. Background technique [0002] Automobile headlamps are required to have a low beam light type and a high beam light type, and both the low beam light type and the high beam light type must meet the relevant requirements. Existing headlights of front vehicles include a light source and a reflector, wherein the reflector includes a low beam reflector and a high beam reflector. Due to the relatively high requirements for the low beam light type, the low beam spot needs to produce a clear cut-off line. Due to the unreasonable design of the reflector in the prior art, the light cannot directly obtain the cut-off line through the reflection of the reflector. Therefore, the existing common The practice is that the low beam is composed of a reflector, a baffle, and a lens. The shading sheet set at the front is used to block part of the light from t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/10F21V7/06
CPCF21S41/141F21S41/32
Inventor 陈焕杰袁沅
Owner GUANGDONG RAYTON INTELLIGENT OPTO CO LTD
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